'(=> (=< (Machine_Beam_Section_Modulus_Right_Minimum ?X) (Machine_Beam_Section_Modulus_Left_Minimum ?X)) (= (Minacceptablembeammodulus ?X) (Machine_Beam_Section_Modulus_Left_Minimum ?X)))
(<= (Has-Constraint $X C-30_2) (Elevator $X)) (Inherited-Slot-Value Elevator Has-Constraint C-30_2) (Used-In-Constraint Minacceptablembeammodulus C-30_2) (Used-In-Constraint Machine_Beam_Section_Modulus_Left_Minimum C-30_2) (Used-In-Constraint Machine_Beam_Section_Modulus_Right_Minimum C-30_2)